Battery Pack Solutions — One-Stop Supply with Agency Advantage
As an authorized distributor of EVE Energy and Changhong Sanjie battery cells, HAOSHENG offers a unique competitive advantage: battery cell supply + heat shrink tubing packaging — a bundled solution that saves you sourcing time and cost.
Why Choose Our Battery Solutions?
- Authorized Agency — Direct supply of EVE and Changhong Sanjie cells, guaranteed authenticity and competitive pricing
- Integrated Supply — Battery cells + custom heat shrink tubing from one supplier
- Full Customization — Custom printing, specific dimensions, color coding for your battery packs
- Quality Assurance — All products comply with international standards (ISO, IECQ, RoHS, REACH)
Heat Shrink Tubing Specifications for Cylindrical Battery Cells
| Cell Model | Tube Inner Diameter (mm) | Shrink Ratio | Wall Thickness (mm) | Material |
|---|---|---|---|---|
| 18650 | 18.5–19.0 | 2:1 | 0.08–0.12 | PET / PVC |
| 21700 | 21.5–22.0 | 2:1 | 0.08–0.15 | PET / PVC |
| 26650 | 26.5–27.0 | 2:1 | 0.10–0.15 | PET / PVC |
| 32700 | 32.5–33.0 | 2:1 | 0.12–0.18 | PET / PVC |
| 4680/46800 | 46.0–47.0 | 2:1 | 0.15–0.20 | PET |
Material Comparison: PET vs PVC for Battery Applications
| Property | PET Heat Shrink Tube | PVC Heat Shrink Tube |
|---|---|---|
| Operating Temperature | -40°C to 150°C | -40°C to 105°C |
| Shrink Temperature | 150°C+ | 90–110°C |
| Flame Retardancy | UL94 V-0 | UL94 V-0 / V-1 |
| Dielectric Strength | >15 kV/mm | >10 kV/mm |
| Wall Thickness | Thin (0.08–0.15mm) | Medium (0.10–0.25mm) |
| Eco-Friendly | Yes (RoHS compliant) | Yes (RoHS compliant) |
| Best Use | High-temp batteries, premium packs | Standard battery insulation |
Applications
- Cylindrical lithium battery insulation packaging (18650, 21700, 26650, 32700, 4680)
- Energy storage battery packs (ESS)
- Power tool battery packs
- E-bike / E-motorcycle battery packs
- Consumer electronics battery packs
- Medical device battery packs
Quality Control & Testing Standards
Every batch of heat shrink tubing undergoes rigorous QC testing before shipment:
- Shrink Ratio Test — Verified at specified temperatures to ensure consistent shrinkage
- Flame Retardancy Test — UL94 vertical burn testing for safety compliance
- Dielectric Strength Test — High-voltage insulation breakdown verification
- Tensile Strength Test — Mechanical durability testing per IECQ standards
- Dimensional Accuracy — Inner diameter, wall thickness, and length tolerances checked
Our Battery Agency Brands
EVE Energy — One of China’s top lithium battery manufacturers, listed on Shenzhen Stock Exchange (300014). Specializing in cylindrical cells, lithium primary batteries, and energy storage solutions.
Changhong Sanjie — A subsidiary of Changhong Group, specializing in high-rate cylindrical lithium batteries for power tools and e-mobility applications.
How We Work
- Tell us your battery specifications and tube requirements
- We provide a bundled quotation (cells + tubing)
- Sample confirmation and mass production
- One-stop shipping with proper export documentation